The singer wrote in his new book “Zayn” that he sometimes went days without a meal, thanks to his crazy schedule and the pressure of being in the world’s most popular boy band.

“When I look back at images of myself from around November 2014, before the final tour, I can see how ill I was,” the 23-year-old wrote, according to British publication the Sun.

“It wasn’t as though I had any concerns about my weight or anything like that, I’d just go for days — sometimes two or three days straight — without eating anything at all,” he wrote. “It got quite serious, although at the time I didn’t recognize it for what it was.”

Malik left One Direction in March 2015. He told the Associated Press he’s now taking care of himself and is “a bit older and a bit more wiser” when it comes to eating.

He wrote in his book “I think it was about control. I didn’t feel like I had control over anything else in my life, but food was something I could control, so I did. I had lost so much weight I had become ill.”

Malik isn’t the only male celebrity to speak publicly about having an eating disorder, with Elton John and Russell Brand discussing having similar trouble, according to the New York Daily News.

While Malik is dealing with his eating issues, he also struggles with anxiety. Just a couple months ago he cancelled a show in Dubai over anxiety issues. He also cancelled a performance last summer in London for the same reason.

“Unfortunately my anxiety that has haunted me throughout the last few months around live performances has gotten the better of me,” he wrote on Twitter, after canceling the London show. “With the magnitude of the event, I have suffered the worst anxiety of my career.”

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